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Durability Experience with Metallic NOx Catalysts
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English
Abstract
Results with a modified dual catalyst system incorporating Gould's Nitrogen Oxide (NOx) reduction catalysts are presented. The key factors controlling durability are examined through laboratory, engine dynamometer, and vehicle tests. Test data is presented showing that control of oxygen input to the NOx catalyst can result in significantly improved durability. Results indicate that by combining oxygen input control with a new low ammonia forming catalyst, stable NOx catalyst performance can be achieved through 25,000 miles of AMA mileage accumulation. Potential failure mode factors are also discussed.
Authors
Citation
Fedor, R., Dunlevey, F., Henry, R., and Steiner, R., "Durability Experience with Metallic NOx Catalysts," SAE Technical Paper 741081, 1974, https://doi.org/10.4271/741081.Also In
References
- Bernstein L. S. et al “Application of Catalysts to Automotive NO x Emission Control.” SAE Transactions 80 1971 paper 710014
- Lunt R. S. et al. “Application of a Monel-Platinum Dual-Catalyst System to Automotive Emission Control.” SAE Transactions 81 1972 paper 720209
- Bernstein L. S. et al. “Nickel-Copper Alloy NO x Reduction Catalysts for Dual Catalyst Systems.” Paper 730567 SAE National Automobile Engineering Meeting Detroit May 17 1973
- Fedor R. J. et al. “Metallic Catalysts: An Approach to Achieving 1976 Emission Standards.” Paper No. 37B 74th National Meeting of the American Institute of Chemical Engineers New Orleans March 11-15 1973
- Lee Chin Ho Makowski M. P. “Some Aspects of the Mechanism of NO x Reduction Over Nickel Alloy Catalysts.” SAE/DOT International Automobile Tire Conference Toronto October 1974